X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fusb%2Fserial%2Fcypress_m8.c;fp=kernel%2Fdrivers%2Fusb%2Fserial%2Fcypress_m8.c;h=244acb1299a95675fbf44b1668d1d112a6cd7a9d;hb=52f993b8e89487ec9ee15a7fb4979e0f09a45b27;hp=01bf533928192d6f2f4b77f44995bd63fd6d1be2;hpb=c189ccac5702322ed843fe17057035b7222a59b6;p=kvmfornfv.git

diff --git a/kernel/drivers/usb/serial/cypress_m8.c b/kernel/drivers/usb/serial/cypress_m8.c
index 01bf53392..244acb129 100644
--- a/kernel/drivers/usb/serial/cypress_m8.c
+++ b/kernel/drivers/usb/serial/cypress_m8.c
@@ -447,6 +447,11 @@ static int cypress_generic_port_probe(struct usb_serial_port *port)
 	struct usb_serial *serial = port->serial;
 	struct cypress_private *priv;
 
+	if (!port->interrupt_out_urb || !port->interrupt_in_urb) {
+		dev_err(&port->dev, "required endpoint is missing\n");
+		return -ENODEV;
+	}
+
 	priv = kzalloc(sizeof(struct cypress_private), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
@@ -606,12 +611,6 @@ static int cypress_open(struct tty_struct *tty, struct usb_serial_port *port)
 		cypress_set_termios(tty, port, &priv->tmp_termios);
 
 	/* setup the port and start reading from the device */
-	if (!port->interrupt_in_urb) {
-		dev_err(&port->dev, "%s - interrupt_in_urb is empty!\n",
-			__func__);
-		return -1;
-	}
-
 	usb_fill_int_urb(port->interrupt_in_urb, serial->dev,
 		usb_rcvintpipe(serial->dev, port->interrupt_in_endpointAddress),
 		port->interrupt_in_urb->transfer_buffer,